Loi du 5 mai 2026 (NIS 2 Luxembourg) Copilot
A general AI answer on Luxembourg NIS 2 tends to stop at the EU directive. It misses who supervises you (the ILR, or the CSSF for banks and market infrastructure), what ILR-supervised essential entities file every year, and the national fines on registration and board duties. This assistant works from the Luxembourg texts.
The Law has applied since 10 May 2026 and the registration deadline has passed. Check your entity category and supervisor now.
What the NIS 2 Luxembourg Copilot Can Do
Applicability check against Annexes I and II of the Law, the size thresholds, and the cases in article 1 that apply whatever the size, such as public administration entities and critical entities
Supervisor mapping under article 3: the ILR for most sectors, the CSSF for banking and financial market infrastructure and for digital infrastructure and managed ICT services where it already supervises the activity
Risk-management measures under article 12, worked through its ten measure areas and the risk analysis framework the authority may specify by regulation or circular
ILR filings for the essential entities it supervises: the yearly description of measures in place, the cyber risk scenario questionnaire and the multi-year action plan
Incident reporting timeline under article 14: preliminary notification within 24 hours, incident notification within 72 hours (24 hours for a trust service provider whose trust services are affected), final report within one month
Registration data for the authority's list (article 11), the two-week update duty, and mapping from an existing ISO 27001 programme to the article 12 measures
About Loi du 5 mai 2026 (NIS 2 Luxembourg) Copilot
NIS 2 Luxembourg assistant: scope under the Law of 5 May 2026, ILR or CSSF supervision, registration, incident deadlines and board duties.
The Law (Loi du 5 mai 2026, Mémorial A no. 225)
Scope, essential and important entity categories, and the sectors in Annexes I and II (articles 1 and 11)
Risk-management measures (article 12), board duties (article 13), incident reporting (article 14) and the information sent for the authority's list (article 11)
Fines for breaching article 12 or the notification duties in article 14(1) to (4) of up to €10 million or 2% of worldwide annual turnover for essential entities, and €7 million or 1.4% for important entities, whichever is higher (article 26); up to €250,000 for breaches of other listed duties, such as registration, board and domain-data duties (article 25); periodic penalties of up to €1,250 a day, capped at €25,000 (article 26(7))
Who does what
The ILR is the competent authority for the sectors in the annexes and for critical entities; the CSSF covers banking and financial market infrastructure, and digital infrastructure and ICT services for the activities it supervises (article 3)
The HCPN is the single point of contact and the cyber crisis authority (articles 5 and 6)
Two CSIRTs: GOVCERT.LU for State administrations and services, public establishments and critical entities; CIRCL for everyone else, which also coordinates vulnerability disclosure (articles 7 and 9)
Supervision (articles 22 and 23)
Essential entities face ex ante and ex post supervision: on-site inspections, regular and targeted security audits, security scans and requests for evidence
Essential entities notify their measures to the authority (article 12(3)); for the ILR, that means a yearly description of measures, a cyber risk scenario questionnaire and a multi-year action plan, with the details set in ILR regulations
Important entities are supervised ex post, when there are signs they do not comply
In both regimes, the entity pays for a targeted audit by an independent body unless the authority decides otherwise
The board and management (articles 13 and 22(5))
The board signs off on the cybersecurity risk measures, keeps watch on how they are carried out, and can be held liable when the entity falls short of article 12
Board members follow regular training, and the entity offers similar training to its staff
If earlier enforcement measures against an essential entity have not worked and a compliance deadline set by the authority has passed, it can ask the court to temporarily suspend a certification or authorisation, or to temporarily bar a chief executive or legal representative from management duties (article 22(5)); this does not apply to public administration entities
Related frameworks
NIS 2
The parent EU directive the Law of 5 May 2026 transposes.
DORA
For financial entities under DORA, the sector act that displaces parts of the Law where its rules are at least equivalent.
ISO 27001
A common way to organise the article 12 measures and the evidence the ILR asks essential entities for.
NIS 2 Belgium
The neighbouring transposition, for groups operating across Belgium and Luxembourg.
Cross-framework mappings
Working across NIS 2 Luxembourg and another standard? ISMS Mappings is a free public directory of control maps (ISO 27001, SOC 2, NIST, GDPR, and more). A Better ISMS tool, separate from the chat assistant.
Browse free mappingsFrequently Asked Questions
What is the Law of 5 May 2026?
It is the Luxembourg law that transposes the EU NIS 2 Directive (2022/2555), adopted as bill no. 8364 and published in Mémorial A no. 225 on 6 May 2026. It has applied since 10 May 2026 and repeals the law of 28 May 2019 that transposed the first NIS Directive. It sets who is in scope, the risk-management and board duties, the incident reporting steps, and the supervisory and sanctioning powers of the ILR and the CSSF.
Who has to comply?
Organisations of a type listed in Annex I (highly critical sectors) or Annex II (other critical sectors) that are at least medium-sized and active in the EU: energy, transport, banking, financial market infrastructure, health, water, digital infrastructure, managed ICT services, public administration, space, postal services, waste, chemicals, food, manufacturing, digital providers and research. Some are in scope whatever their size, including public electronic communications providers, trust service providers, TLD registries and DNS providers, domain name registration services, critical entities under Luxembourg's critical entities law of the same date, and public administration entities, a category that leaves out the courts, the Chamber of Deputies and the Banque centrale du Luxembourg. Large Annex I entities, qualified trust service providers, TLD registries, DNS providers, medium-sized public electronic communications providers, public administration entities, critical entities, former operators of essential services and entities the authority designates as essential are essential entities; the other Annex I and II entities in scope are important entities, and domain name registration services are listed and regulated separately. Most entities fall under Luxembourg's jurisdiction when they are established in Luxembourg. Public electronic communications providers fall under the country where they provide their services, public administration entities under the State that set them up, and DNS providers, TLD registries, domain name registration services, cloud, data centre, content delivery and managed (security) service providers, online marketplaces, search engines and social networks follow their main EU establishment (article 16). The registration deadline was 10 July 2026. An entity that missed it should register now: it is still bound by the Law and can be fined under article 25.
What are the deadlines after an incident?
For a significant incident, article 14 sets a clock that starts when you become aware of it: a first alert within 24 hours, a fuller notification with your initial assessment within 72 hours, an interim update whenever the CSIRT or the authority asks, and a final report one month after the 72-hour notification. If the incident is still running at that point, you send a progress report instead and the final report one month after the incident is dealt with. A trust service provider notifies within 24 hours when its trust services are affected. Reports go to the competent authority, which forwards them to the CSIRT and to the single point of contact, the High Commission for National Protection (HCPN). Entities supervised by the ILR file through its SERIMA online form. Where a sector act such as DORA applies to you and its measures or reporting rules have at least equivalent effect, the matching provisions of the Law do not apply to you (article 1(8)).
How does the Copilot help, and what does it not do?
It reads your situation against the Luxembourg texts rather than the directive alone: which annex and category you fall into, whether the ILR or the CSSF supervises you, what an ILR-supervised essential entity files each year, and how the article 12 measure areas line up with the controls you already run under ISO 27001. Treat the output as a draft for your own review. The Copilot does not register you or notify incidents for you, and your supervisor decides whether your measures are adequate.
Ask it from your AI.
Connect ISMS Copilot to the assistant you already use and send it your Luxembourg NIS 2 questions: entity category, ILR or CSSF supervision, incident deadlines, board duties.
ISMS Copilot